Definition of "infall" [infall]

• The act or process of falling in. (noun)
• An incursion; an inroad. (noun)
• The area where water, storm runoff, etc., enters a storm drain. (noun)
• Movement towards a massive astronomical body under the influence of gravity; especially the process whereby gas falls towards a neutron star or black hole at high speed, forming a plasma (noun)
• To fall in. (verb)

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• "For how the energetic cycles of that power the cell emerged, that alone has only entertained many interesting possibilities, hot core and cooler oceans, reducing ocean/sea floor/land and more oxidizing atmosphere, molecules generated by incubation in space and subsequent infall to earth, reacting with terrestrial molecules, photochemistry (from a uv-rich sun), concentration gradients of a wide variety of sorts, reactions of molecules produced by energetic processes involving meteor impact/burnup."
• "The infall is much smaller now, on the order of 5,500 tons per year and most in the form of micrometeorites or even smaller particles of interplanetary dust."
• "At this point the sky falls in and the editor, crying “Enough!” crouches submissively to the swaying floor, sobbing and crying like a baby pulverised by meteoric infall …"